This paper presents an innovative modeling method for the mutual inductance of two magnetically coupled coils in an inductive link, ensuring efficient energy and data transmission in implantable electronic devices. An electrical model, which can be used within a circuit simulator, directly takes into account the lateral and longitudinal displacements between the external coil (transmitter) and the internal coil (receiver), thus enabling to optimize the voltage gain of the link, and opening to the design of inductive links with high power transfer capabilities and high overall efficiency.
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